47 GHAPTEE III. THE OLD WOELD MONKEYS OE CEEC OPITHECID.E. WITH the exception of those examples of the Barbauy Ape which are carefully preserved on the Rock of Gibraltar, the Cercopithecidse are inhabitants of Africa and Asia. Some are entirely arboreal, others are terrestrial, and others again are equally at home in the trees or on the ground. They may be purely vegetable feeders, or they may consume both fruits and insects; but the Baboons will kill lambs for the sake of the milk in their stomachs. Their minds as a rule are cunning, and they cannot be trusted to live in a docile manner in confinement, for they will bite severely when provoked. As regards the Baboons it may be stated that they are the only Mammals which thoroughly understand the value of combination for attack and for defence. The family Cercopithecidse is divided into the following sub-families and genera :— r Sub-family I. Cercopithecina?. Genus Cercopithecus. Guenons. ,, Macacus. Macaques, Barbary Ape. „ Gynopitliecits. Black Ape. „ Theropithecu*. Gelada Baboon. ,, Cynocephahts. Baboons, Mandrill, Drill, „ Cercocebns. Mangabeys.